this guy's pretty darn good at making terrain with little more than foam, and he's got a lot of different projects that are relatively simple and provide amazing results, i certainly recommend watching at least a few of his videos

In one of your terrain building guides, you mentioned using grout. When I looked for some at my local hardware store, it was covered with warnings about being carcinogenic. How do you use this stuff safely?

“Fantasy remains a human right: we make in our measure and in our derivative mode, because we are made: and not only made, but made in the image and likeness of a Maker."
— J.R.R. Tolkien (On Fairy-Stories)

I use grout and (a lot of) joint compound in my scratch built terrain. The few things I've learned are:

- Stay away from cheaper Chinese made products. They have much poorer quality control and are more likely to have toxins. Often you can even smell the difference.

- When sanding after everything is dry, make sure you wear a particle mask and do your work either outside or in a very well ventilated area. Many of the issues associated with these products are due to the inhalation of particulate matter.

For safer alternatives you can use plaster of paris or a mixture of wood-glue and sawdust._________________A Bunch of Savages